#include <stdio.h>
#include <math.h>
int main()
{
	double fResultSin;
	double fResultCos;
	double fResultTan;

	double fXsin = 0.5;
	double fXcos = 0.5;
	double fXtan = 0.5;
	
	fResultSin = sin(fXsin);
	fResultCos = cos(fXcos);
	fResultTan = tan(fXtan);
	printf("the sin of %lf is %lf \n",fXsin,fResultSin);
	printf("the cos of %lf is %lf \n",fXcos,fResultCos);
	printf("the tan of %lf is %lf \n",fXtan,fResultTan);
	return 0;
}
